福建10个不同产地‘芙蓉李’果实品质与矿质元素含量的相关性与通径分析

目的 研究福建10个不同产地‘芙蓉李’果实品质与矿质元素含量的关系,分析果实品质与矿质元素含量的地区差异,以及影响各果实品质的主要矿质元素。方法 采集福建10个产地果园的‘芙蓉李’,测定8个品质指标和10种矿质元素含量,利用比较分析、相关分析和通径分析等方法,分析地区间品质和矿质元素含量的差异、相关性和通径系数。结果 不同产地间各果实品质指标、矿质元素含量均存在极显著差异(P<0.01)。相关性分析表明,单果重与N含量呈显著正相关、与Mg含量呈显著负相关,色泽亮度因子L^*与Zn含量呈极显著正相关(r=0.903)、与P含量呈显著正相关(r=0.685),色泽红色因子a^*与Zn呈显著负相关(r=-0.706),色泽黄色因子b^*与Ca含量呈显著正相关(r=0.677)、而与Fe含量呈显著负相关(r=-0.705)。通径分析表明, N对单果重的直接影响最大, P对硬度的直接影响最大, Mn对固酸比的直接影响最大;Zn是对可溶性固形物含量、色泽因子L^*、a^*均具有最大直接影响的元素,Fe是对可滴定酸、色泽因子b^*有最大直接影响的元素,对‘芙蓉李’品质指标直接影响较大的元素还有B、Ca、K等。结论 ‘芙蓉李’果实品质是多种元素共同作用的结果,在生产中应协调好各种矿质元素的配比以提高果实品质,实现优质高效生产。

Correlation and path analysis of fruit quality and mineral element content of ‘Furongli’ from 10 kinds of different origins in Fujian

Objective To study the relationship between fruit quality and mineral element content of ‘ Furongli’from 10 kinds of different origins in Fujian, and analyze the regional differences in fruit quality and mineral element content, as well as the main mineral elements that affect the quality of each fruit. Methods ‘Furongli’ was gathered from 10 kinds of different origins in Fujian, then 8 kinds of quality indexes and 10 kinds of mineral elements content were determined. The differences, correlations and path coefficients of quality and mineral element content between regions were analyzed by the methods of comparative analysis, correlation analysis and path analysis. Results There were significant differences in fruit quality indexes and mineral element content among different locations(P<0.01).Correlation analysis showed that there was a significant positive correlation between fruit weight and N content, a significant negative correlation between fruit weight and Mg content. The color factor L^* was extremely significantly positively correlated with Zn content(r=0.903), and was significantly positively correlated with P content(r=0.685),there also was a significant negative correlation between color factor a^*and Zn content(r=-0.706), the color factor b;was positively correlated with Ca content(r=0.677), but negatively correlated with Fe content(r=-0.705). Path analysis showed that N had the greatest direct effect on fruit weight, P had a greatest direct effect on fruit firmness, Mn had a greatest direct effect on the soluble solid content/titratable acid content, while Zn was the element that had the greatest direct influence on soluble solid content, L^*and a^*. Fe was the element that had the greatest direct influence on titratable acid and b^*, besides, B, Ca and K, etc. also directly affected the quality of ‘Furongli’. Conclusion The fruit quality of ‘Furongli’ is the result of the joint action of various elements. In production, the ratio of various mineral elements should be well coordinated to improve fruit quality and achieve high-quality and efficient production.